(19)
(11) EP 0 962 312 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.05.2001 Bulletin 2001/20

(43) Date of publication A2:
08.12.1999 Bulletin 1999/49

(21) Application number: 99304317.3

(22) Date of filing: 03.06.1999
(51) International Patent Classification (IPC)7B32B 27/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 03.06.1998 JP 15477598

(71) Applicants:
  • Japan Polystyrene Inc.
    Tokyo (JP)
  • Yokota Vinyl Yamagata Ltd
    Mogami-gun, Yamagata (JP)

(72) Inventors:
  • Yokota, Kenzi
    Chiba (JP)
  • Ishii, Takahiro
    Takaishi-shi, Osaka (JP)
  • Uemura, Akio
    Takaishi-shi, Osaka (JP)
  • Sato, Masaru
    Takaishi-shi, Osaka (JP)
  • Takaku, Masato
    Takaishi-shi, Osaka (JP)

(74) Representative: Harvey, David Gareth et al
Graham Watt & Co. Riverhead
Sevenoaks Kent TN13 2BN
Sevenoaks Kent TN13 2BN (GB)

   


(54) Easily openable container and unit for use in the same


(57) A container unit comprises a vessel portion and a lid portion sealed to one another such that contents are prevented from leaking out but which can be easily removed by peeling off the lid portion by hand. The vessel portion is excellent in terms of moldability from a sheet by vacuum forming and/or air-pressure forming and can be molded effectively in a short time.
The container is obtainable by molding the vessel portion from a multi-layer sheet comprising two or more layers, wherein at least one surface layer portion (a) of the multi-layer sheet comprises a resin composition including the following components (A), (B) and (C), and at least one of the other layer portions includes the following component (D):
The container unit is completed by sealing to the vessel portion a lid, the lid comprising a single-layer film or a multi-layer film comprising two or more layers in which at least one surface layer portion of the single-layer film or the multi-layer film comprising two or more layers includes a blend of a polystyrene resin and a polyolefin resin, a polystyrene resin or a polyolefin resin.





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